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Paper Bag. I No. 242,662; Patented June 7,1881,

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UNITED STATES PATENT OFFICE.

FELIX W. LEINBAOH AND CLARENCE A. WOLLE, OF BETHLEHEM, PENNSYL- VANIA,ASSIGNORS 'lO SAID WOLLE.

' PAPER BAG.

SPECIFICATION forming part of Letters Patent No. 242,662, dated June 7,1881. Application filed April 4, 1881. (No model.)

To all whom it may concern:

Be it known that we, FELIX W. LEINBACH and CLARENCE A. WOLLE, citizensof the pnited States, residing in Bethlehem, Northampton county,Pennsylvania, have invented an Improvement in the Manufacture of PaperBags, of which the following is a specification.

'"he object of our invention is to cut a tube of paper, without waste,into bag-blanks of such a character that when the primary fold is madein the bottom of the same said fold will have edges overlapping in thecenter and separated on the flaps, so that when the paste is app ied andthe finishing folds made a perftiutly secure bottom will be formed, andthe pasting of the bottom and sides of the bag together will beprevented. This object we attain in the manner hereinafter set forth,refer ence being had to the accompanying drawings, in which- Figure 1 isa view of a tube from which a bag-blank has been cut in accordance withour invention; Fig.2, a. View of the blank after the primary fold hasbeen formed on the bottom 25, of the same; and Fig. 3 a view of theblank-atter the primary-fold has been pasted, prior to the formation ofthe finishing folds.

On reference to Fig. 1 it will be observed that the tube is severed oncurved linesff, so

that the mouth end of the blank is convex and the opposite or bottom endconcave. On opening said concave end of the blank and folding back oneside of the same on the line to, as usual, to form the primary fold, theedges y y will overlap each other between the lines-ct a, which definethe extent of the bottom of the bag, and aspace will intervene betweensaid edges outside of these lines-that is to say, those portions whichare afterward folded over on the lines a. a to form the finishing flapsand complete the bottom. (See Fig. 2.) When paste is applied to theprimary fold, as shown by the shading in Fig. 3, it cannot gain accessto those portions of the tube whichafterward 4 5 form the sides of thebag, as these portions lie beneath that part of the fold between thelines a a, and are protected by the overlapping edges, so that all riskof pasting the sides and bottom of the bag together is overcome.

Owing to the separation of the edge-s y y on those portions of the foldwhich are to form the finishing flaps, all three of the leaves 11, b,and d of said flaps receive paste, so that when they are folded over onthe bag-bottom a close union of the three leaves with the bottom iseffected, 5 5 and no openings are presented through which the contentsof the bag can leak.

It will be observed that by this method of cutting the tube into blanksthe desired overlapping and separation of the edges of the pri- 6o maryfold of the bag-bottom is attained with out waste of material; and itwill be evident that the same result can be attained by severing thetube on lines inclined in opposite di-. rections from the centerto theedges of the tube, as indicated by the dotted lines on in Fig. 4.

t We claim as our invention 1. The mode herein described of cutting atube of paper, without waste, into bag-blanks, I

the primary folds of which will have edges overlapping iu the center andseparated on the flaps, said mode consisting in severing the tube onlines curved, or inclined in reverse directions, from the center to theopposite edges of 7 5 the tube, as set forth.

2. A bag-blank having its opposite ends curved, or inclined in reversedirections, from the center to the opposite edges, the bottom end beingthe reverse of the month end, as specified.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

FELIX W. LEINBACH. CLARENCE A. WOLLE.

. Witnesses J ULIUs D. BISHOP, FR. M. RAUCH.

